As you can see, there are many splendid reasons for the collectivist to choose from. I'll add another big one: the fear of watching the outsider succeed. When you've lived your life according to what your parents, teachers, priests and peers have told you - you might have a safe spot in society and respect of your peers. Yet at the same time feel like you've wasted your potential. Not lived up to what could have been. Didn't do that round the world trip or write that book. So when you see someone trying to forfeit the cozy spot in society and the respect of their peers in order to try and grasp that singular, unique something their heart desires...you want them to fail. Because if they should succeed, it throws your whole life and what you have achieved into grave doubt and makes you question your self-image. And if there is one thing we can't bear to part with it is our illusions about ourselves.
Good point. This article, from theAtlantic of all places, touches on a similar vein.
The Rage of the Almost-Elite
http://www.theatlantic.com/business/archive/2011/10/the-rage-of-the-almost-elite/247638/